iRhythm Holdings, Inc.
DE ˙ DB ˙ US4500561067
89,00 € ↑1,00 (1,14%)
2026-06-04
DEL PRIS
SecurityDE:I25 / iRhythm Holdings, Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership19,993 shares
Latest Disclosed Value $ 2,359,574
Bnp Paribas Arbitrage, Sa reports 72.85% decrease in ownership of I25 / iRhythm Holdings, Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 19,993 shares of iRhythm Holdings, Inc. (DE:I25) valued at $1,959,314 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 73,651 shares of iRhythm Holdings, Inc.. This represents a change in shares of -72.85% during the quarter. The current value of the position is $1,779,377 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F IRhythm Holdings Equity 450056106 19,993 -53,658 -72.85 2,360 -81.95 0.0001
2026-02-10 2025-12-31 13F IRhythm Holdings Equity 450056106 73,651 -59,248 -44.58 13,069 -42.83 0.0059
2025-11-13 2025-09-30 13F iRhythm Technologies Equity 450056106 132,899 -50,358 -27.48 22,857 -18.99 0.0122
2025-08-14 2025-06-30 13F iRhythm Technologies Equity 450056106 183,257 179,779 5,169.03 28,214 7,651.10 0.0162
2025-05-14 2025-03-31 13F iRhythm Technologies Equity 450056106 3,478 -899 -20.54 364 -7.61 0.0002
2025-02-14 2024-12-31 13F iRhythm Technologies Equity 450056106 4,377 -7,391 -62.81 395 -54.87 0.0002
2024-11-13 2024-09-30 13F iRhythm Technologies Equity 450056106 11,768 8,360 245.31 874 138.52 0.0006
2024-08-13 2024-06-30 13F iRhythm Technologies Equity 450056106 3,408 -12,768 -78.93 367 -80.49 0.0003
2024-05-01 2024-03-31 13F iRhythm Technologies Equity 450056106 16,176 1,358 9.16 1,876 18.28 0.0016
2024-02-14 2023-12-31 13F/A-2 iRhythm Technologies Equity 450056106 14,818 -6,120 -29.23 1,586 -19.61 0.0018
2024-02-07 2023-12-31 13F/A-1 iRhythm Technologies Equity 450056106 14,818 -6,120 1,586 0.0002
2024-02-07 2023-12-31 13F iRhythm Technologies Equity 450056106 14,818 1,586
2023-11-14 2023-09-30 13F iRhythm Technologies Equity 450056106 20,938 7,180 52.19 1,974 37.49 0.0025
2023-08-09 2023-06-30 13F iRhythm Technologies Equity 450056106 13,758 1,107 8.75 1,435 -8.54 0.0018
2023-05-12 2023-03-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 12,651 7,377 139.87 1,569 217.61 0.0022
2023-02-14 2022-12-31 13F iRhythm Technologies Equity 450056106 5,274 -7,486 -58.67 494 -69.09 0.0008
2022-11-16 2022-09-30 13F/A-1 iRhythm Technologies Equity 450056106 12,760 581 4.77 1,599 21.52 0.0026
2022-11-15 2022-09-30 13F iRhythm Technologies Equity 450056106 12,760 581 1,599 0.0004
2022-08-12 2022-06-30 13F iRhythm Technologies Equity 450056106 12,179 9,392 336.99 1,316 200.23 0.0021
2022-05-18 2022-03-31 13F/A-1 iRhythm Technologies Equity 450056106 2,787 -3,650 -56.70 439 -42.14 0.0006
2022-02-09 2021-12-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 6,437 371 6.12 758 113.24 0.0011
2021-11-16 2021-09-30 13F/A-1 IRHYTHM TECHNOLOGIES EQUITY 450056106 6,066 3,838 172.26 355 141.50 0.0005
2021-11-12 2021-09-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 6,477 4,249 1,542 0.0000
2021-08-10 2021-06-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 2,228 -28,110 -92.66 148 -96.51 0.0002
2021-05-07 2021-03-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 30,338 24,904 458.30 4,213 227.02 0.0062
2021-02-10 2020-12-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 5,434 -1,043 -16.10 1,289 -16.47 0.0024
2020-10-30 2020-09-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 6,477 -2,757 -29.86 1,542 44.11 0.0022
2020-08-06 2020-06-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 9,234 -98,283 -91.41 1,070 -87.77 0.0019
2020-05-13 2020-03-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 107,517 -12,672 -10.54 8,747 6.88 0.0179
2020-02-12 2019-12-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 120,189 115,727 2,593.61 8,184 2,379.70 0.0149
2019-11-07 2019-09-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 4,462 1,029 29.97 331 21.77 0.0006
2019-07-30 2019-06-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 3,433 -2,112 -38.09 271 -34.70 0.0005
2019-04-25 2019-03-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 5,545 5,345 2,672.50 416 3,092.31 0.0009
2019-02-12 2018-12-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 200 -790 -79.80 14 -86.02 0.0000
2018-11-07 2018-09-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 990 127 14.72 94 32.86 0.0001
2018-07-25 2018-06-30 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 863 -2,081 -70.69 70 -62.16 0.0001
2018-05-11 2018-03-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 2,944 -111 -3.63 185 8.19 0.0003
2018-03-05 2017-12-31 13F/A-1 IRHYTHM TECHNOLOGIES EQUITY 450056106 3,055 1,727 130.05 171 151.47 0.0003
2018-02-01 2017-12-31 13F IRHYTHM TECHNOLOGIES EQUITY 450056106 3,055 1,727 171
2017-11-03 2017-09-30 13F IRHYTHM TECHNOLOGIES STOCK 450056106 1,328 -60 -4.32 69 17.24 0.0002
2017-08-03 2017-06-30 13F IRHYTHM TECHNOLOGIES STOCK 450056106 1,388 1,364 5,683.33 59 6,438.36 0.0002
2017-05-03 2017-03-31 13F IRHYTHM TECHNOLOGIES STOCK 450056106 24 24 1 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.